215 Spark Plug Blowout

I was driving my 62 Cutlass when the number 3 spark plug blew out. (No aggressive acceleration or driving) There a several external methods for fixing this such as Helicoil and Time-Sert. I am concerned about the shaving entering the cylinder. I have read where you coat the tap with grease to collect shavings, vacuum the cylinder, and then flush the cylinder of any remaining debris. Looking for the right fix and not the right now fix. Thanks

I used a Helicoil when this happened years ago on a Corvair's aluminum engine. I did the three things you quoted:

1. coat the tap with grease to collect shavings,

2. vacuum the cylinder,

3. flush the cylinder of any remaining debris.

It worked for me.

I was told that the reason for the blown plug, was that it was probably not tight enough, and should have been torqued initially, and then again after several heat/cool cycles, like after several drives.